GeV Analysis of Mixed Morphology Supernova Remnants Interacting with Molecular Clouds

TL;DR

This study analyzes gamma-ray emissions from selected mixed-morphology supernova remnants interacting with molecular clouds using Fermi data, revealing extended emissions and detections above 5 sigma significance.

Contribution

It provides the first gamma-ray analysis of specific mixed-morphology supernova remnants, highlighting their extended emission and significance levels.

Findings

G359.1-0.5 detected with >5 sigma significance

G337.8-0.1 also shows extended emission

G359.1-0.5 coincides with TeV source HESS J1745-303

Abstract

The first remnants detected by the Fermi Gamma-ray Space Telescope were of the type of mixed-morphology supernova remnants interacting with molecular clouds. In this paper we are presenting preliminary results of the gamma-ray analysis of 4 selected mixed morphology remnants, G359.1-0.5, G337.8-0.1, G001.0-0.1, and G346.6-0.2, as well as G349.7+0.2, in the 0.2 - 300 GeV energy range from the data collected by Fermi Gamma-ray Space Telescope for 3 years. G359.1-0.5, G337.8-0.1, and G349.7+0.2 were all detected with significances above 5 sigma. The excess distribution of G359.1-0.5 shows extended gamma-ray emission, which coincides with the TeV gamma-ray source HESS J1745-303. G337.8-0.1 also shows an extended nature.